Blue Notes · Umpire Grade2026-04-12
SF @ BAL
Home plate: Chris Segal
“Reliable as a Tuesday: no complaints, no headlines.”
Umpire Grade
94.3% accurate
Run Favor
runs, BAL
ABS Overturns
of 5 reviewed
What this shows — how Chris Segal called the 159 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 150 right. Below, only his misses are plotted, alongside every pitch the ABS (Automated Ball-Strike System) reviewed on a challenge.
The zone, as he called it
strike called ballball called strikeABS overturnedABS upheld
The calls that moved the game
- 1+0.69▼1 · 3-2 strike called ball
Pete Alonso vs Adrian Houser - 2-0.19▼3 · 2-0 ball called strike
Taylor Ward vs Adrian Houser - 3+0.13▲8 · 1-1 strike called ball
Willy Adames vs Tyler Wells
Run impact from the count run-value table: a missed strike three is worth far more than one on 3-0.
ABS — the Automated Ball-Strike System
5 pitches went to the robots · 3 overturned (ump overruled) · 2 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Taylor Ward — ump said ball, robot ruled strike: overturned.
- 2Daniel Susac — ump said ball, robot ruled ball: upheld.
- 3Erik Miller — ump said ball, robot ruled ball: upheld.
- 4Taylor Ward — ump said ball, robot ruled strike: overturned.
- 5Pete Alonso — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.